[jaspRegression] Add a footnote to Ordinal GLM output to clarify parameterization...

[sisyphus-jasp]

Summary

Fixes: jasp-stats/jasp-issues#3967

Root cause

• Ordinal GLM coefficient footnote was incomplete: listed levels/predictors but not how to interpret coefficient sign under the cumulative-logit parameterization.
• Same footnote block built level labels with length(dv) (always 1), so numbering was wrong.

What changed

• Updated ordinal-logistic footnote logic in R/generalizedlinearmodel.R (.glmEstimatesTableFill).
• Fixed level indexing to use actual number of levels via seq_along(levels(...)).
• Expanded footnote text to clarify parameterization: model uses logit(P(Y<=k)); positive coefficients imply higher odds of lower levels, negative coefficients imply higher odds of higher levels.

Caveats / reviewer checks

• Only footnote text path changed; no model fitting/statistics changed.
• Verify wording is acceptable for translators and user docs.

Implementation Plan

Root cause

• Ordinal GLM coeff footnote in R/generalizedlinearmodel.R (.glmEstimatesTableFill) lists levels + predictor labels only; parameterization meaning not explicit, so sign interpretation unclear.
• Same block has level-index bug: length(dv) used instead of number of factor levels, so labels render 1:<level> repeatedly.

Proposed changes

• Edit only ordinal-logistic footnote block in .glmEstimatesTableFill.
• Build level labels with seq_along(levels(dataset[[dv]])).
• Expand footnote to explain cumulative-logit parameterization from this model (logit(P(Y<=k))) and sign meaning (positive -> lower levels; negative -> higher levels).
• Keep all user text in gettextf().

Expected test impact

• Fit/statistics unchanged.
• Footnote text changes for ordinal GLM output; snapshot/text expectations may need refresh.
• Non-ordinal GLM paths unaffected.

Add a footnote to Ordinal GLM output to clarify parameterization interpretation

Test Results

Test Run	Result
Baseline (pre-fix)	[ FAIL 1 | WARN 58 | SKIP 1 | PASS 581 ]
Post-fix	[ FAIL 1 | WARN 58 | SKIP 1 | PASS 581 ]
Upstream CI	83f5ccf -- CI: failing

Automated Code Review

Approved after 1 review iteration(s).